[Bug 102322] System crashes after "[drm] IP block:gmc_v8_0 is hung!" / [drm] IP block:sdma_v3_0 is hung!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102322

--- Comment #42 from dwagner <jb5sgc1n.nya at 20mm.eu> ---
Ok, did the proposed debugging session with trace-cmd, with output to a
different PC over ssh. Using today's amd-staging-drm-next and btw., Arch
updated the Xorg server earlier today.

This time it took about 4 minutes until the video playback with 3 fps crashed -
the symptom was the same (as in one-colored blank screen and a subsequent
system crash), but this time the kernel and ssh session survived the crash for
some seconds, enough for me to also issue the earlier suggested "umr -O verbose
-R gfx[.]" command after the amdgpu crash, so I can upload the output of that,
too, but this was the last command executed, the system crashed completely
while running it (so its output may be partial).

Find attached dmesg, trace, and umr output.

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